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Measurement and Instrumentation

Measurement and Instrumentation
Figure show an RC potentiometer to measure AC voltage. It is desire that Vo/Vi should be independent of frequency. The value of C shoud be

 10 µF.
 11 µF.
 0.1 µF.
 0.09 µF.

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Measurement and Instrumentation
Consider the following statements : In a measuring instrument, 1. Linearity is more important than sensitivity. 2. High precision indicates high accuracy 3. Accuracy cannot be better than resolution. Of these statements

 1, 2 and 3 are correct
 1 and 3 are correct
 2 and 3 are correct
 1 and 2 are correct

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Measurement and Instrumentation
In a portable instrument , the controlling torque is provided by

All of the listed here
Gravity
Eddy currents
Spring

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Measurement and Instrumentation
To measure the flux, devices used are based on

Piezo-electric effect
Hall effect
Photo-voltaic effect
Voltaic effect

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Measurement and Instrumentation
Magnetic deflection is inversely proportional to

 Voltage.
 (Voltage)1.5.
 (Voltage)2.
 (Voltage)-0.5.

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Measurement and Instrumentation
The ratio of change in output to the change in the input is called

 precision
 repeatability
 resolution
 sensitivity

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